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Marsileaceaephyllum

Polypodiopsida - Marsileaceae

Discussion

Emended generic diagnosis. Rhizomes bearing compound

leaves and roots, or detached compound leaves.

Leaves with four leaflets. Leaflets sessile, obovate to obdeltoid,

base shape cuneate to convex, apex obtuse and

rounded. Margin entire or apical portion crenate. Leaflet

venation dichotomizing with few anastomoses to reticulate.

Marginal vein present.

References consulted for diagnosis. Rich et al. (2001),

Skog and Dilcher (1992), Nagalingum (2007), Herman and

Kvacek (2010).

Taxonomy
Marsileaceaephyllum was named by Nagalingum (2007). It is not extant. It is considered to be a form taxon. It was considered unknown by Nagalingum (2007).

It was assigned to Marsileaceae by Nagalingum (2007), Hermsen et al. (2013) and Vallati et al. (2017).

Species
M. johnhallii

Synonymy list
YearName and author
2007Marsileaceaephyllum Nagalingum
2013Marsileaceaephyllum Hermsen et al.
2017Marsileaceaephyllum Vallati et al. p. 52

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RankNameAuthor
kingdomPlantae
phylumPteridophyta
classPolypodiopsida
RankNameAuthor
familyMarsileaceaeMirbel 1802
genusMarsileaceaephyllumNagalingum 2007

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

G. †Marsileaceaephyllum Nagalingum 2007
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†Marsileaceaephyllum johnhallii Skog and Dilcher 1992
Diagnosis
ReferenceDiagnosis
E. J. Hermsen et al. 2013Emended generic diagnosis. Rhizomes bearing compound leaves and roots, or detached compound leaves. Leaves with four leaflets. Leaflets sessile, obovate to obdeltoid, base shape cuneate to convex, apex obtuse and rounded. Margin entire or apical portion crenate. Leaflet venation dichotomizing with few anastomoses to reticulate. Marginal vein present.